A Kingdom Hearts 3.5 compilation would give Square Enix the opportunity to mix and match mainline games and mobile spin-offs in interesting ways.

One major Kingdom Hearts version risks becoming outdated with the release of Kingdom Hearts 4, highlighting the need for a new release of its kind.

In Kingdom Hearts Dark Road, you play through the past of a young Xehanort and Eraquas, and there aren't many Keyblades available. There are three that appear, but two of them are duplicates.